It's one stop shop to do all your deployments in a single place which makes it easy for us.
With so many options available at our fingertips we can automate almost everything from testing environments to configuration changes at high speeds without manual intervention required by users/managers. The pricing could be better but I guess given their free plan they have to charge more? If you are looking something like aws marketplace then this would not work out well because AWS Marketplace only provides solutions built using its own APIs. We use BUNNYSHELL primarily to deploy test environment configurations (for example staging servers) and also help manage cloud resources through an O365 subscription management tool called PowerApps.